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(physics, chemistry, medicine) A radioactive isotope which, when injected into a chemically similar substance, or artificially attached to a biological or physical system, can be traced by radiation detection devices.
Bone scans use a tiny amount of radioactive tracer to show up ' hot spots ' in the bones.
Using a vein in your arm, you will receive an injection of the radioactive tracer.
In this diagnostic procedure, a radioactive tracer is injected into the bloodstream and images are taken of specific areas or the entire skeleton by CT or MRI.
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